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-rw-r--r--WebCore/page/DOMSelection.cpp424
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diff --git a/WebCore/page/DOMSelection.cpp b/WebCore/page/DOMSelection.cpp
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--- a/WebCore/page/DOMSelection.cpp
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-/*
- * Copyright (C) 2007 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
- * its contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-
-#include "config.h"
-#include "DOMSelection.h"
-
-#include "ExceptionCode.h"
-#include "Frame.h"
-#include "htmlediting.h"
-#include "Node.h"
-#include "PlatformString.h"
-#include "Range.h"
-#include "SelectionController.h"
-#include "TextIterator.h"
-
-namespace WebCore {
-
-DOMSelection::DOMSelection(Frame* frame)
- : m_frame(frame)
-{
-}
-
-Frame* DOMSelection::frame() const
-{
- return m_frame;
-}
-
-void DOMSelection::disconnectFrame()
-{
- m_frame = 0;
-}
-
-Node* DOMSelection::anchorNode() const
-{
- if (!m_frame)
- return 0;
-
- const Selection& selection = m_frame->selection()->selection();
- Position anchor = selection.isBaseFirst() ? selection.start() : selection.end();
- anchor = rangeCompliantEquivalent(anchor);
- return anchor.node();
-}
-
-Node* DOMSelection::baseNode() const
-{
- if (!m_frame)
- return 0;
- return rangeCompliantEquivalent(m_frame->selection()->selection().base()).node();
-}
-
-int DOMSelection::anchorOffset() const
-{
- if (!m_frame)
- return 0;
-
- const Selection& selection = m_frame->selection()->selection();
- Position anchor = selection.isBaseFirst() ? selection.start() : selection.end();
- anchor = rangeCompliantEquivalent(anchor);
- return anchor.offset();
-}
-
-int DOMSelection::baseOffset() const
-{
- if (!m_frame)
- return 0;
- return rangeCompliantEquivalent(m_frame->selection()->selection().base()).offset();
-}
-
-Node* DOMSelection::focusNode() const
-{
- if (!m_frame)
- return 0;
-
- const Selection& selection = m_frame->selection()->selection();
- Position focus = selection.isBaseFirst() ? selection.end() : selection.start();
- focus = rangeCompliantEquivalent(focus);
- return focus.node();
-}
-
-Node* DOMSelection::extentNode() const
-{
- if (!m_frame)
- return 0;
- return rangeCompliantEquivalent(m_frame->selection()->selection().extent()).node();
-}
-
-int DOMSelection::focusOffset() const
-{
- if (!m_frame)
- return 0;
-
- const Selection& selection = m_frame->selection()->selection();
- Position focus = selection.isBaseFirst() ? selection.end() : selection.start();
- focus = rangeCompliantEquivalent(focus);
- return focus.offset();
-}
-
-int DOMSelection::extentOffset() const
-{
- if (!m_frame)
- return 0;
- return rangeCompliantEquivalent(m_frame->selection()->selection().extent()).offset();
-}
-
-bool DOMSelection::isCollapsed() const
-{
- if (!m_frame)
- return false;
- return !m_frame->selection()->isRange();
-}
-
-String DOMSelection::type() const
-{
- if (!m_frame)
- return String();
-
- SelectionController* selection = m_frame->selection();
-
- if (selection->isNone())
- return "None";
- if (selection->isCaret())
- return "Caret";
- return "Range";
-}
-
-int DOMSelection::rangeCount() const
-{
- if (!m_frame)
- return 0;
- return m_frame->selection()->isNone() ? 0 : 1;
-}
-
-void DOMSelection::collapse(Node* node, int offset, ExceptionCode& ec)
-{
- if (!m_frame)
- return;
-
- if (offset < 0) {
- ec = INDEX_SIZE_ERR;
- return;
- }
- m_frame->selection()->moveTo(VisiblePosition(node, offset, DOWNSTREAM));
-}
-
-void DOMSelection::collapseToEnd()
-{
- if (!m_frame)
- return;
-
- const Selection& selection = m_frame->selection()->selection();
- m_frame->selection()->moveTo(VisiblePosition(selection.end(), DOWNSTREAM));
-}
-
-void DOMSelection::collapseToStart()
-{
- if (!m_frame)
- return;
-
- const Selection& selection = m_frame->selection()->selection();
- m_frame->selection()->moveTo(VisiblePosition(selection.start(), DOWNSTREAM));
-}
-
-void DOMSelection::empty()
-{
- if (!m_frame)
- return;
- m_frame->selection()->moveTo(VisiblePosition());
-}
-
-void DOMSelection::setBaseAndExtent(Node* baseNode, int baseOffset, Node* extentNode, int extentOffset, ExceptionCode& ec)
-{
- if (!m_frame)
- return;
-
- if (baseOffset < 0 || extentOffset < 0) {
- ec = INDEX_SIZE_ERR;
- return;
- }
- VisiblePosition visibleBase = VisiblePosition(baseNode, baseOffset, DOWNSTREAM);
- VisiblePosition visibleExtent = VisiblePosition(extentNode, extentOffset, DOWNSTREAM);
-
- m_frame->selection()->moveTo(visibleBase, visibleExtent);
-}
-
-void DOMSelection::setPosition(Node* node, int offset, ExceptionCode& ec)
-{
- if (!m_frame)
- return;
- if (offset < 0) {
- ec = INDEX_SIZE_ERR;
- return;
- }
- m_frame->selection()->moveTo(VisiblePosition(node, offset, DOWNSTREAM));
-}
-
-void DOMSelection::modify(const String& alterString, const String& directionString, const String& granularityString)
-{
- if (!m_frame)
- return;
-
- SelectionController::EAlteration alter;
- if (equalIgnoringCase(alterString, "extend"))
- alter = SelectionController::EXTEND;
- else if (equalIgnoringCase(alterString, "move"))
- alter = SelectionController::MOVE;
- else
- return;
-
- SelectionController::EDirection direction;
- if (equalIgnoringCase(directionString, "forward"))
- direction = SelectionController::FORWARD;
- else if (equalIgnoringCase(directionString, "backward"))
- direction = SelectionController::BACKWARD;
- else if (equalIgnoringCase(directionString, "left"))
- direction = SelectionController::LEFT;
- else if (equalIgnoringCase(directionString, "right"))
- direction = SelectionController::RIGHT;
- else
- return;
-
- TextGranularity granularity;
- if (equalIgnoringCase(granularityString, "character"))
- granularity = CharacterGranularity;
- else if (equalIgnoringCase(granularityString, "word"))
- granularity = WordGranularity;
- else if (equalIgnoringCase(granularityString, "sentence"))
- granularity = SentenceGranularity;
- else if (equalIgnoringCase(granularityString, "line"))
- granularity = LineGranularity;
- else if (equalIgnoringCase(granularityString, "paragraph"))
- granularity = ParagraphGranularity;
- else if (equalIgnoringCase(granularityString, "lineboundary"))
- granularity = LineBoundary;
- else if (equalIgnoringCase(granularityString, "sentenceboundary"))
- granularity = SentenceBoundary;
- else if (equalIgnoringCase(granularityString, "paragraphboundary"))
- granularity = ParagraphBoundary;
- else if (equalIgnoringCase(granularityString, "documentboundary"))
- granularity = DocumentBoundary;
- else
- return;
-
- m_frame->selection()->modify(alter, direction, granularity, false);
-}
-
-void DOMSelection::extend(Node* node, int offset, ExceptionCode& ec)
-{
- if (!m_frame)
- return;
-
- if (!node) {
- ec = TYPE_MISMATCH_ERR;
- return;
- }
- if (offset < 0 || offset > (node->offsetInCharacters() ? caretMaxOffset(node) : (int)node->childNodeCount())) {
- ec = INDEX_SIZE_ERR;
- return;
- }
-
- SelectionController* selection = m_frame->selection();
- selection->expandUsingGranularity(CharacterGranularity);
- selection->setExtent(VisiblePosition(node, offset, DOWNSTREAM));
-}
-
-PassRefPtr<Range> DOMSelection::getRangeAt(int index, ExceptionCode& ec)
-{
- if (!m_frame)
- return 0;
-
- if (index < 0 || index >= rangeCount()) {
- ec = INDEX_SIZE_ERR;
- return 0;
- }
-
- const Selection& selection = m_frame->selection()->selection();
- return selection.toRange();
-}
-
-void DOMSelection::removeAllRanges()
-{
- if (!m_frame)
- return;
- m_frame->selection()->clear();
-}
-
-void DOMSelection::addRange(Range* r)
-{
- if (!m_frame)
- return;
- if (!r)
- return;
-
- SelectionController* selection = m_frame->selection();
-
- if (selection->isNone()) {
- selection->setSelection(Selection(r));
- return;
- }
-
- RefPtr<Range> range = selection->selection().toRange();
- ExceptionCode ec = 0;
- if (r->compareBoundaryPoints(Range::START_TO_START, range.get(), ec) == -1) {
- // We don't support discontiguous selection. We don't do anything if r and range don't intersect.
- if (r->compareBoundaryPoints(Range::START_TO_END, range.get(), ec) > -1) {
- if (r->compareBoundaryPoints(Range::END_TO_END, range.get(), ec) == -1)
- // The original range and r intersect.
- selection->setSelection(Selection(r->startPosition(), range->endPosition(), DOWNSTREAM));
- else
- // r contains the original range.
- selection->setSelection(Selection(r));
- }
- } else {
- // We don't support discontiguous selection. We don't do anything if r and range don't intersect.
- if (r->compareBoundaryPoints(Range::END_TO_START, range.get(), ec) < 1) {
- if (r->compareBoundaryPoints(Range::END_TO_END, range.get(), ec) == -1)
- // The original range contains r.
- selection->setSelection(Selection(range.get()));
- else
- // The original range and r intersect.
- selection->setSelection(Selection(range->startPosition(), r->endPosition(), DOWNSTREAM));
- }
- }
-}
-
-void DOMSelection::deleteFromDocument()
-{
- if (!m_frame)
- return;
-
- SelectionController* selection = m_frame->selection();
-
- if (selection->isNone())
- return;
-
- if (isCollapsed())
- selection->modify(SelectionController::EXTEND, SelectionController::BACKWARD, CharacterGranularity);
-
- RefPtr<Range> selectedRange = selection->selection().toRange();
-
- ExceptionCode ec = 0;
- selectedRange->deleteContents(ec);
- ASSERT(!ec);
-
- setBaseAndExtent(selectedRange->startContainer(ec), selectedRange->startOffset(ec), selectedRange->startContainer(ec), selectedRange->startOffset(ec), ec);
- ASSERT(!ec);
-}
-
-bool DOMSelection::containsNode(const Node* n, bool allowPartial) const
-{
- if (!m_frame)
- return false;
-
- SelectionController* selection = m_frame->selection();
-
- if (!n || selection->isNone())
- return false;
-
- Node* parentNode = n->parentNode();
- unsigned nodeIndex = n->nodeIndex();
- RefPtr<Range> selectedRange = selection->selection().toRange();
-
- if (!parentNode)
- return false;
-
- ExceptionCode ec = 0;
- bool nodeFullySelected = Range::compareBoundaryPoints(parentNode, nodeIndex, selectedRange->startContainer(ec), selectedRange->startOffset(ec)) >= 0
- && Range::compareBoundaryPoints(parentNode, nodeIndex + 1, selectedRange->endContainer(ec), selectedRange->endOffset(ec)) <= 0;
- ASSERT(!ec);
- if (nodeFullySelected)
- return true;
-
- bool nodeFullyUnselected = Range::compareBoundaryPoints(parentNode, nodeIndex, selectedRange->endContainer(ec), selectedRange->endOffset(ec)) > 0
- || Range::compareBoundaryPoints(parentNode, nodeIndex + 1, selectedRange->startContainer(ec), selectedRange->startOffset(ec)) < 0;
- ASSERT(!ec);
- if (nodeFullyUnselected)
- return false;
-
- return allowPartial || n->isTextNode();
-}
-
-void DOMSelection::selectAllChildren(Node* n, ExceptionCode& ec)
-{
- if (!n)
- return;
-
- // This doesn't (and shouldn't) select text node characters.
- setBaseAndExtent(n, 0, n, n->childNodeCount(), ec);
-}
-
-String DOMSelection::toString()
-{
- if (!m_frame)
- return String();
-
- return plainText(m_frame->selection()->selection().toRange().get());
-}
-
-} // namespace WebCore
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